I spent a year building a barcode scanner app that shows real prices at every store near you

I spent a year building a barcode scanner app that shows real prices at every store near you

Hey r/loblawsisoutofcontrol,

I’ve been building this alone for over a year, nights and weekends. Until now, I’ve basically been the only tester. Today I’m opening the first public beta.

It’s called ScanRebel.

Scan any grocery barcode and see what that exact product costs at stores near you — real branch-level prices with addresses and distances, not flyer averages.

It tracks price history so you can see if a “sale” is actually a sale, tracks shrinkflation, and lets you build a cart to compare the total across nearby stores.

You can also snap a photo of a shelf tag to contribute or correct a price. Every price shows where it came from, when it was seen, and whether it’s confirmed at that specific store or estimated. The goal is to never pretend the data is more certain than it actually is.

Right now there are 40+ million price points across Loblaws-family stores, Metro/Food Basics, Sobeys/FreshCo/IGA/Safeway/Foodland, and Walmart, refreshed weekly. Coverage is strongest in Ontario/GTA.

It’s a real beta. Things will break, photos are sparse, and I need people other than me to finally beat on it.

Does this actually help you shop? What’s broken, confusing, or missing? And what should I prioritize next?

iOS and Android beta:

https://scanrebel.app

Brutal feedback is genuinely welcome. I’ll be reading every comment.

u/ScanRebel — 6 days ago

App coupon denied at counter, does this happen often?

I got a notification from the Tim's app and decided I was in the mood for breakfast.

As I'm ordering, they tell me they're out of biscuits. No problem, I'll take an English muffin instead.

Then they tell me they're out of caramel iced coffee. Again, no problem, I'll take a regular iced coffee.

Then I pull out my phone to scan the coupon from the Tim's app.

The cashier immediately says, "No, no, no. We don't accept those at this location."

I was honestly shocked. I've never had a Tim Hortons refuse an offer from their own app before.

At that point I just turned around and left. It was barely worth the $6.99 with the coupon, I couldn't even get what I originally wanted, and I wasn't going to argue with the staff over breakfast.

This was at a Queen St. W location in downtown Toronto.

Has anyone else had a Tim Hortons refuse an app offer?

reddit.com
u/ScanRebel — 23 days ago

Metro told me the Retail Scanning Code of Practice didn't apply. Was I wrong?

I stopped at Metro to grab two Monsters that were marked 2 for $6.

At checkout, one scanned at $3.99 and the other at $3.00. I pointed it out, expecting them to apply the Retail Scanning Code of Practice.

Instead, I was told it didn't apply because "it wasn't in the flyer." I explained that the Scanning Code of Practice isn't limited to flyer prices it's about an item scanning higher than the displayed shelf price.

It took way longer than it should have, but after going back and forth they finally honored it and I got the higher-priced one free.

It made me wonder how many people either don't know about the Scanning Code of Practice or just give up because arguing isn't worth the hassle.

Has anyone else had to push back to get a store to honour it?

reddit.com
u/ScanRebel — 24 days ago